To me Yahwi isn't a bad guy. He's just extremely ignorant about how to treat and care about people genuinely. And being that close to someone is very new for him too. That's why he's the worst boyfriend now. I really wish him the best character development, cause I know too well how hard it is to get "warm" when you've only been cold until now.
I think Charlie and Ethan suit them very well but it's a shame that they had to change their names just to make the story easier for Western people. How is the world going to acknowledge that every country has its own culture if they keep faking the characters to be Americans ! I got used to their original names...
In my opinion it was the best ending for this story and its characters. Reading the epilogue made it even clearer to me. I'm so sad it's ending but I seriously loved this webtoon. I don't really know why but I truly cherish the 3 mains characters. You can tell the author really worked hard on creating deep personalities for them.
YUPPP